New Delhi: Banking on developing herd immunity to fight coronavirus is “too large a risk” for any nation and only timely interventions can mitigate the spread of COVID-19, Director General of the Council of Scientific and Industrial Research (CSIR) Shekhar Mande said. Herd immunity is achieved when the majority of population becomes immune to an infectious disease, either because they have become infected and recovered, or through vaccination. When that happens, the disease is less likely to spread to people who aren’t immune, because there just aren’t enough carriers. Responding to a question on whether it is viable for India to achieve herd immunity, Mande said, “It is too large a risk for any nation.” “Herd immunity, typically works when 60-70 per cent population of a country has been affected and it’s too large a risk to take for any nation. What one would do is to take intervention before so that the infection does not spread,” he told in an interview. Mande said several theo …
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